Mckee mhoon



Dec. 26, 1922. 1,439,969. McKE E M H 00 N.

RADIATOR WATER GAUGE.

FILED MAR. 21. 1922.

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Patented Dec. 26, 1922.

PATENT OFFlCTZ' MOKEE MHOON, F LINDSAY; CALIFORNIA.

RADIATOR WATER GAUGE.

Application filed March 21, 19252v Serial No. 545,479.

Tr) all iclmm if may concern:

Be it known that l. Mchrzr. .\lnoo.\'. a citi zen of the United States. residing at Lindsay. in the county of 'lulare and Stateot California. have invented certain new and useful Improvements in Radiator \Yater Gauges. of which the following is a specification.

My present invention relates to a gauge or indicator for denoting the liquid level in a motor vehicle radiator. and more particularly to a gauge simulating in its outline the configuration ol the radiator to the cap of which it is secured and wherein a level indicator or target is employed and which is of such color as to till the outline space of the indicator to the level corresponding to the level of the lllllllll within the radiator.

The objects of this invention are. prima- 2D rilv. to provide a' construction of the float; type, removable with the radiator cap. and

I wherein the steam of thc tluid in the radia tor is precluded from passing upwardly in the indicator and logging the transparent 25.sight openings. and at the same time :illording an easy. tree movement for the tloat or elevator. further oliject is to provide a framed opening adapted for closing by a curtain or target carried by the elevator. nd

the upper edge of which extends transversely across the opening. denoting with the upper edge of the trained opening the level of the liquid within the radiator. Another object is to provide a balance spring within the float guide and to provide a normal adjust meat for the tloat within the guide. adapting the installation to radiators provided with different head capacities. further object is to provide a construction adapted for manufacture at a compiu'ativclv 'low cost. due to its simplieity and arrangcim-nt of parts. and one which is thoroughly ctticient for the purpose designed.

\Vith the above mentioned and other ohjeets in view. the invention consistsin the novel construction and combination of parts hereinafter described. illustrated in the accompanying drawings and pointed out in the claims hereto appended: it being understood that various changes in the form. proportion size and minor details of construe tion within the scope of the claims mav he resorted to without departing from the spirit or sacrificing any of the invention.

To more. clearly comprehend the invehtion. reference is directed to the-accompany ing di awingswv ierein i Fig; 1 is a view in front elevation of one embodiment of my invention'.- Fig. 2 is a vertical central sectional view taken on line 22 of Fig. 1.. 5

Fig. 3 is a transverse sectional .view taken on line 3*3 of Fig. 1.

ad vantages of the n l l 1g. -t. IS a transverse sectional .view taken on line 4-4 of Fig. 1. I

.lteferring more particularly to the draw ings. wherein like characters of reference designate corresponding part. sl indicates the upper chamber of a vehicle radiator mounting the usual filler cap attaehinga coupling 2. to which is detachahlysecured, the radiator or filler cap 3 of the well known form. In itsrenter, the cap 3 is provided with an opening 4 having a threadedinterior and within 'which is received the threaded central portion 5 of a tube 6 extending a considerable distance below the. tiller orradiator cap 3. In its side wall the loweri end of the tube (3 is provided with fluid passages T. and the lower end thereof is preferably closed by an adjustable"sealing'inut H. ormed with a boss 9 surrounded. by. the l(|\\\' end 1 t a coiled spring 10 -\Vithin the tllullllil'ld. the tube (3 is'r a floatlilcarry-y ing a stem lll extending upwardly in the tube. as in Fig. 2. Above the threaded portion 5. the tube is formed with a flange 14 adapted to rest on the upper surface of the cap or tiller opening 3. and said tube is locked within the opening 4 by a locking nut 13. The upper end of the tube. is flattened or pressed to simulate the outline of a vehicle radiator 16 and the outline frame of the radiator is formed with a passage 15 tln-rethrough. lhe chamber It continues upwardly in the outline Frame. as at 13. and the opposing faces of the opening U are closed by glass or other transparent members 19. each of which mounts a trausvcne line or indication 211, in the present instance denoting the low or danger point f the fluid in the vehicle radiator.

At a point immediately above the upper surface of the radiator cap 3. the tube wall 6 is surrounded hv a collar 21 affording a finish thcrcto., and the collar and tube wall are provided with aligned vent openings 22, permitting the passage or escape of the steam which may enter the chamber 11.

The stem 13 carries a bafiie disk 23, which, under all conditions, lies above the upper surface of the vents or openings 22, and balfies or precludes the upward passage of steam through the opening 18 to fog the glass 19. The ufiper end of the stem 13 mounts an indicating curtain or target 24 of an area co-extensive with the inner outline of the frame; said curtain being opaque and preferably green in color to simulate water. The upper edge 25 of the curtain or target, dependent on the level of the water in the vehicle radiator, denotes in said radiator frame outline, the corresponding level ofthe liquid in -said vehicle radiator.

An air vent 26 is provided in the top of the frame 16.

It will be understood that the spring it) affords. a counterbalance for a portion of the weight of the float 1'2; stem 13; target or curtain 24 and battle 23, and when the liquid level in the radiator is at'a danger point, the weight of these parts is sufficient o compress the spring until the edge 25 of the target or curtain aligns with the mark or line 20.

It will also be apparent that by employ ing the transparent members or glasses 19 and using a green curtain or target 24 having a horizontal upper edge. that the indicator will denote, in a color similar to water, the level of the liquid within the indicator, which is of a conventional radiator design.

I claim:-

1. In combination with an apertured radiator cap, liquid level imlicating mechanism secured thereto and comprising a tube provided with a fluid passage and extended through said aperture and secured to the cap. said tube depending from said cap, a. vertically adjustable member within the base of the tube, a slidable stem in said tube, a float secured to the lower end thereof. a gauge frame carried by said tube above the ca and extending laterally from opposite sid es of the tube to overlie the cap, said frame being oblong in cross section and formed with a relatively large sight opcning thercthrough. a gauge glass closing the opposite sides of said opening and, pro vided with a chamber therehctwccn conimunicating with the tube. and an indicator carried by said stem within said chamber and adapted to extend across said sight opening for its full transverse length.

2. In combination with an apertured radiator cap. liquid level indicating mechanism secured thereto and comprising a tube provided with a liuid passage and extended through said aperture and secured to the cap. said tube depending from said cap. a vertically adjustable member within the base of thetubc. a slidable stem in said tube, a float secured to the lower end thereof. a gauge frame carried by said tube above the cap and extending laterally from opposite sides of the tube to overlie the cap, said frame being oblong in cross section and formed with a relativcl vlarge sight opening tlu-lcthrough. a gauge glass closing the opposite sides of said opening and provided with a chamber thcrcbctwcen connnnnicab ing with the tube. a countcrlmlancc spring for said float in thc base of said tube and resting on said vertically adjustable incin her. and an indicator carried by said stern within said chamber and adapted to extend across said sight opening for its full transverse length. I

In testimony whereof I have signed my moon to this s|u' .'itication. 

